38 lines
1.1 KiB
Go
38 lines
1.1 KiB
Go
// Copyright 2024 The Libc Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package libc // import "modernc.org/libc"
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import (
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"syscall"
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"unsafe"
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)
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func Xpread(tls *TLS, fd int32, buf uintptr, size Tsize_t, ofs Toff_t) (r Tssize_t) {
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if __ccgo_strace {
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trc("tls=%v fd=%v buf=%v size=%v ofs=%v, (%v:)", tls, fd, buf, size, ofs, origin(2))
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defer func() { trc("-> %v", r) }()
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}
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n, err := syscall.Pread(int(fd), unsafe.Slice((*byte)(unsafe.Pointer(buf)), size), ofs)
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if err != nil {
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*(*int32)(unsafe.Pointer(X__errno_location(tls))) = int32(err.(syscall.Errno))
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return -1
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}
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return Tssize_t(n)
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}
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func Xpwrite(tls *TLS, fd int32, buf uintptr, size Tsize_t, ofs Toff_t) (r Tssize_t) {
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if __ccgo_strace {
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trc("tls=%v fd=%v buf=%v size=%v ofs=%v, (%v:)", tls, fd, buf, size, ofs, origin(2))
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defer func() { trc("-> %v", r) }()
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}
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n, err := syscall.Pwrite(int(fd), unsafe.Slice((*byte)(unsafe.Pointer(buf)), size), ofs)
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if err != nil {
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*(*int32)(unsafe.Pointer(X__errno_location(tls))) = int32(err.(syscall.Errno))
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return -1
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}
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return Tssize_t(n)
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}
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